Finding the Fourth Proportional to 163.23, 245.81 and 145.12
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Solution
The fourth proportional to 163.23, 245.81 and 145.12 is: 218.54
Step by Step Solution
- Step 1: Write the proportion equation
163.23 : 245.81 = 145.12 : x - Step 2: Convert to fraction form
163.23/245.81 = 145.12/x - Step 3: Cross multiply
163.23x = 245.81 × 145.12 - Step 4: Simplify right side
163.23x = 35,671.06 - Step 5: Solve for x
x = 35,671.06/163.23 - Step 6: Final answer
x = 218.54
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.